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Methodology to rodent bark damage assessment on forest regeneration
Homolka, Miloslav ; Zejda, Jan ; Heroldová, Marta ; Kamler, Jiří
This methodology provides us with instructions, how to estimate extent of bark damage by gnawing caused by rodents on forest plantings based on a simple criterions. Data obtained may be used for objective assessment of rodent origin tree damage extent and its total value calculation. Exact data on tree damage can be used as a back coupling for damage prevention effectiveness. Relation between the rodent damage prevention costs and damaged area replanting costs may be retrospectively considered.
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Methodology to rodent species density monitoring in forest environment
Homolka, Miloslav ; Zejda, Jan ; Heroldová, Marta ; Kamler, Jiří
This methodology provides us with instruction how to monitor rodent densities in forest environment and is concentrated on the species causing damage to broad-leaved forest plantings. Principle presumption for effective plantings protection control is to know rodent’s population density. Basic ecological informations about the target species are also included. This methodology book contribute to better understanding of young tree damage origin in broader connections and contribute to more effective input on damage prevention. Methodology is addressed above all to forest practices workers.
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Rodents as a forest pest species
Heroldová, Marta ; Suchomel, J. ; Zejda, J. ; Obdržálková, D. ; Zapletal, M.
Dynamic of rodents species in forest as well as in the fields was evaluated. Impact of rodent species on forest or orchard young trees was found to be in positive correlation with their density. Individual species of rodents and their foraging ecology in relationship to impact on forest regeneration was discussed. In case of common vole strong impact on orchard trees in case of high population densities and long and snowy winters was stated. Importance of long time monitoring with possibility to predict rodents gradation was stressed on.
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Free living ungulates and field crops
Kamler, Jiří ; Dvořák, J. ; Heroldová, Marta ; Homolka, Miloslav
We evaluated the importance of field crops for the ungulate game species. The large herbivores exploit the field crops at the different intensity according to crop species, season, feeding strategy, human disturbance in the forest etc. The field crops are generally not too important as a food resource for wild ungulate species and in the environment with sufficiency of herb and shrub layer in the forest environment they prefer native diet components.
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